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D15-780BPC603 — NUT,PLAIN,ROUND

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

D15-780BPC603: NUT,PLAIN,ROUND.

The NUT,PLAIN,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: ROUND, nut_diameter: 3.125 INCHES NOMINAL IN, thread_class: 3B, nut_thickness: 0.562 INCHES NOMINAL IN, thread_series: UNF. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-318-2903, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
D15-780BPC603
NSN: 5310-00-318-2903
FSC: 5310 — Nuts and Washers
CAGE: 90099 — NORTHROP GRUMMAN SYSTEMS CORPORATION DIV MARINE SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleROUND
nut_diameter3.125 INCHES NOMINAL IN
thread_class3B
nut_thickness0.562 INCHES NOMINAL IN
thread_seriesUNF
special_features2 SETSCREWS HOLES TAPPED 0.375-16 THD ON 2.250 IN. DIA BOLT CIRCLE 180 DEG APART IN
thread_directionRIGHT-HAND
drive_point_depth0.281 INCHES NOMINAL IN
nominal_thread_size1.500 INCHES IN
drive_point_diameter0.281 INCHES NOMINAL IN
drive_point_quantity2
NSN5310-00-318-2903
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: D15-780BPC603 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD SERIES: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.500 INCHES IN
•
NUT DIAMETER: 3.125 INCHES NOMINAL IN
•
DRIVE POINT DEPTH: 0.281 INCHES NOMINAL IN
•
NUT THICKNESS: 0.562 INCHES NOMINAL IN
•
DRIVE POINT DIAMETER: 0.281 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
THREAD SERIESUNF
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.500 INCHES IN
NUT DIAMETER3.125 INCHES NOMINAL IN
DRIVE POINT DEPTH0.281 INCHES NOMINAL IN
NUT THICKNESS0.562 INCHES NOMINAL IN
DRIVE POINT DIAMETER0.281 INCHES NOMINAL IN
SPECIAL FEATURES2 SETSCREWS HOLES TAPPED 0.375-16 THD ON 2.250 IN. DIA BOLT CIRCLE 180 DEG APART IN
DRIVE POINT QUANTITY2
SUBSTITUTES & CROSS-REFERENCES 9
D15-679HPC603Reference document
Same NSN cross-reference
Reference document — Secondary reference
D15-470JPC823Reference document
Same NSN cross-reference
Reference document — Secondary reference
D15-793HPC603Reference document
Same NSN cross-reference
Reference document — Secondary reference
D15-470DPC603Reference document
Same NSN cross-reference
Reference document — Secondary reference
D15-780HPC603Reference document
Same NSN cross-reference
Reference document — Secondary reference
D15-780IPC603Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is D15-780BPC603?
D15-780BPC603 is a NUT,PLAIN,ROUND.
What parts can replace D15-780BPC603?
There are 9 known substitutes for D15-780BPC603: D15-679HPC603, D15-470JPC823, D15-793HPC603 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D15-780BPC603?
D15-780BPC603 is cataloged in the U.S. Government catalog under NSN 5310-00-318-2903. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.